I'm relaxed and haven't had a proper press n curl since I was like .. 8. But, I'd say the press n curl. IMO, the dominican blowouts aren't SO bad on occasion [I've only done it twice]. It's just a rollerset, then a blowdry. The blowdryer is moderately hard on my NG but the rollerset manages to get it mostly straight! They only spent like 5 minutes flatironing me, and that was mostly for a bump at the ends, because it was already straight.
Hot combs get almost uncontrollably hot, and I hate marcel irons for the same reason.
HTH!